Galvanic element or battery.



N0 MODEL.

BRANDT.

PATENTED NOV. 22, 1904.

GALVANIG ELEMENT GE BATTERY.

,APPLICATIDN FILED APR. 20, 1904.

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GALVANIC ELEMENT OW BATTERY.,

SPECIFICATION forming part of Letters Patent No. 775,692, dated November 22, 1904.

Application Bled April 20, 1904:, Serial No. 204,101. (No model.)

To all wir/07H, t 717/021/ cori/cern:

.Be it known that I, PAUL BRANDT, merchant, a subject of the King of Prussia, German Emperor, residing at Schneberg', near Berlin, in the .Kingdom of Prussialerman Empire,have invented certain new and useful Improvements in Galvanic Elements or Batteries, of which the following is a specification.

The small galvanic elements or batteries as employed for pocket-lanterns and the like are possessed with the drawback that owing' to the small dimensions of the element only a small lilling-aperture can be provided apart from the fact that a second aperture must be provided for letting escape the air displaced by the liquid poured .into the vessel or jar. An,u other point in'fiuencing the size of the filling'- aperture is established by the currentconducting parts secured to the pesitive-pole and to the negative-pole electrode for connecting' the element or the battery with the circuit. These current-conducting parts are covered with a comparatively thick layer of an isolating' ma terial--suchas pitch, asphalt, and the likem poured also around and upon the elements. @wing to the isolating' material being' thus exposed at its upper surface, the material was very liable to crack off in the case of the element or battery being dropped, the currentcondueting parts in question being' vthen uncovered from the isolating' layer or layers and being thus also subjected to outer influences of a hurtful nature.

Endeavors have already been made to obtain a large filling-opening by the use of cylinders consisting of Zinc and being' open at both ends, the lower opening' of the cylinder or cylinders being employed as the lillingaperture. How ever, although obtainingl by this means a large filling-aperture the current-conducting' projecting' parts of the element or battery were as badly protected as heretofore, and there was, moreover, the further drawback that [illing up the elements was connected with pretty great difficulties, in so far as the elements had to be turned upside down. A battery constructed in this manner was useless during' and also after the iilling operation for a pretty great time, because the liquor or electrolyte had to be completely sucked off before the elel ment could again be turned into its former proper position. All these drawliacks are overcome by the improved arrangement forming' the subject-matter of this invention. ln my improved elementor battery the arrangement of the carbon electrode is the reverse of what it formerly was, since the connection between the carbon electrode of one element with the zinc electrode of the other element is effected at the bottom of the elements and the respective connecting' parts are embedded in an isolating' material--sueh as pitclnasphalt, and the like--the arrangement in this respect being' such that the isolating' material surrounding the said parts cannot crack off or leave its place in any way, as it is held securely in place at all sides. By arranging the current-conducting' connecting parts at the lower end of a battery the upper ends of the elements of the same are free to receive large the isolating' material, as is more fully described hereinafter.

l have shown as an example one form of construction of my improved battery in the accompanying drawing', which shows a longitudinal section through a battery composed of three elements. In this battery the negativepole electrodes are formed by cylinders e, separated one from the other by isolating partition-walls vf. Each cylinder contains the positive-pole electrode y, consisting' of a part 1 of carbon and a part -r/ of a substance adapted to suck up a comparatively large quantity of the electrolyte. The lower end of each cylin der is closed by a disk Z of isolating' material, and the carbon 7;' extends downward through said disk. rlhe projecting' lower end of the carbon is connected with the lower end of the neighboring' cylinder by a metallic strip c, embedded in a layer of isolating' material cnsuch as pitch, asphalt, or the like-cast upon the bottom of the vessel fr. From the last cylinder extends outward a metallic strip 27, forming' at its upper end the negative pole of the battery, and from the first carbon extends outward a metallic strip p, the upper end of which forms the positive pole. The isolating' material e is securely held in. place by the bottom c and the neighboring portions of filling-apertures as well as a thick layer of` of the upper disks holds a piece ot' tube f, having a comparatively large inner diameter and g forming the large filling-opening for the res The pieces ot' tube f conf spective element. sist generally of glass or a similar material. Upon the Lipper disks l is also cast an isolating material of the kind already mentioned,

the said material extending up to the upper end of the pieces oi' tube f, so that the upper surface otl the battery shows besides the upper surface ot' the layer of the isolating material in question nothing else but the annular upper ends of the parts fand the projecting ends of the metallic strips j) p. Owing to the filling-apertures being so large, I can dispense with providing a special aperture for the escape of the air.

Having now described my invention, what I desire to secure by Letters Patent of the United States isl. In a galvanic element or battery, the combination with a positive-pole electrode, and a negative-pole electrode surrounding the former, of a connection between the two electrodes, located at the lower ends of the same,

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an isolating layer having said connection einbedded in it, another layer of an isolating material situated upon the element, and a coniparatively large lilling-aperture in said upper layer, substantially and for the purpose as described.

2. In a galvanic electrode or battery, the combination with a carbon electrode It' and an envelop g of a material adapted to suck up an electrolyte, and with a zinc electrode formed by a piece ot' tube zinc, ot' a connection between the lower end of a carbon electrode with the lower end of the neighboring Zinc electrode, a layer of an isolating' material having said connections embedded in it, another layer of the isolating material situated over the upper ends of the elements, disks also consisting of an isolating material, and located in the ends of the said cylinders between the electrolyte and the isolating layers, pieces of tube extending through the upper isolating layer and serving as filling-apertures Jfor the elements, substantially and for the purpose as described.

In witness whereoil I have hereunto set my hand in presence of two witnesses.

PAUL BRANDT.

Witnesses:

WOLDEMAR HAUPT, HENRY HASPER. 

